WTJP21 RJTD 210600 WARNING 210600. WARNING VALID 220600. WARNING IS UPDATED EVERY 6 HOURS. STORM WARNING. TROPICAL STORM 2506 WIPHA (2506) 985 HPA AT 21.3N 109.3E GULF OF TONGKING MOVING WEST 08 KNOTS. POSITION FAIR. MAX WINDS 45 KNOTS NEAR CENTER. RADIUS OF OVER 30 KNOT WINDS 240 MILES SOUTH SEMICIRCLE AND 150 MILES ELSEWHERE. FORECAST POSITION FOR 211800UTC AT 20.7N 107.8E WITH 35 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 980 HPA, MAX WINDS 50 KNOTS NEAR CENTER. FORECAST POSITION FOR 220600UTC AT 20.5N 106.4E WITH 50 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 970 HPA, MAX WINDS 60 KNOTS NEAR CENTER. EXTENDED OUTLOOK. FORECAST POSITION FOR 230600UTC AT 20.5N 104.0E WITH 85 MILES RADIUS OF 70 PERCENT PROBABILITY CIRCLE. 992 HPA. BECOMING TROPICAL DEPRESSION. JAPAN METEOROLOGICAL AGENCY.=